Q.Name the input/output device used to do the following:

Shape of Question

This is a plain theory question asking for specific input/output devices corresponding to given tasks. Each sub-part requires naming the appropriate device.

a) To output audio

Speakers or headphones convert electrical signals into sound waves that we can hear. Speakers are external devices that project sound into the environment, while headphones deliver audio directly to the user's ears.

b) To enter textual data

A keyboard is the primary input device for typing text. Each key press generates a character code that the computer processes. Alternative devices include touchscreen keyboards on tablets and smartphones.

c) To make hard copy of a text file

A printer produces physical copies of digital documents on paper. Laser printers use toner and heat, while inkjet printers spray liquid ink onto paper. Both create permanent, tangible output.

d) To display the data/information

A monitor (or display screen) visually presents information from the computer. Modern monitors use LCD, LED, or OLED technology to render text, images, and video in real-time.

e) To enter audio-based command

A microphone captures sound waves and converts them into electrical signals. Voice recognition software then processes these signals to interpret spoken commands, enabling hands-free interaction with the computer.

f) To build 3D models …

This question tests your understanding of the hardware peripherals that connect to a computer for data input and output. Each device serves a specific purpose in the input-processing-output cycle.

The key is to distinguish between input devices (which send data into the computer) and output devices (which receive data from the computer), and to know the specialized function of each.

(a) To output audio

Speakers (or headphones/earphones).

Speakers convert digital audio signals from the computer into sound waves that humans can hear. They are output devices because they receive processed audio data from the sound card and produce audible sound.

(b) To enter textual data

Keyboard.

The keyboard is the primary input device for typing letters, numbers, and symbols. Each key press generates a character code that the computer interprets as text input.

(c) To make hard copy of a text file

Printer.

A printer produces a physical (hard) copy of digital documents on paper. It is an output device that converts electronic text and images into printed form. Common types include inkjet, laser, and dot-matrix printers.

(d) To display the data/information

Monitor (or display screen).

The monitor is the primary visual output device, displaying text, images, videos, and the graphical user interface. Modern monitors use LCD, LED, or OLED technology.

(e) To enter audio-based command

Microphone.

A microphone captures sound (voice commands) and converts it into digital signals that the computer can process. It is an input device used for voice recognition, video calls, and audio recording.

(f) To build 3D models

3D Printer.

A 3D printer creates physical three-dimensional objects from digital models by depositing material layer by layer (additive manufacturing). It is an output device that transforms CAD designs into tangible prototypes or products. …